Stencil-writing machine.



P. E. KVISTAD.

sTENclL wRmNG MACHINE.

APPLICATION FILED AUG. I3. |917.

I. E. uvlsAD, -STENCIL WRITING MACHINE. APPLICATION FILED AUG.I3. 191?.

1,256,333". Y Patented Feb.12,191s,

/5 2 SHEETS-SHEET 2.

Para!A E. /fwlsad UNITED STATES PATENT OFFICE.

PAUL E. KVISTAD, 0F

SEATTLE, WASHINGTON.

sTENoIL-WRITING MACHINE.

Application led August 13, 1917. Serial No. 186,079.

To all whom it may concern.'

Be it known that I, PAUL E. Kvis'rAD, citizen of the United States, residing at Seattle, in the county of King and State of 'Washingtoin have invented a certain new and useful Improvement in Stencil-lVriting Machines, of which the following is a specilication.

My invention relates to improvements in stencil writing machines, and the object of my invention 1s to provide a writing machine which shall be adapted to be slidably movl able to different positions when disposed upon a flat surface, as upon a blank leaf of an open book, or upon a sheet 0f paper, where it can be manually actuated to stencil upon said surface desired letters or characters in lines or 'in columns as may be required.

I accomplish this object by devices illustra'ted in the accompanying drawing wherein Figure 1 is a plan A,View of a stencil writinv machine embodyino my invention;

ig. 2 is a view of tlie same in front side elevation;

Fig. 3'is an enlarged sectional view ofthe same on broken line 3, 3 of Fig. 1:

Fig. 4 is a plan view of a detail of the same;

Fig. 5 is a fragmentary sectional view of the same on broken line 5, 5 of Fig. 3;

Fig. 6 is a fragmentary view on broken line 6, 6 of Fig. 5showing parts of the same;

Fig. 7 illustratesone of the stencil members of the same;

' Fig. 8 is a fragmentary view in vertical section on broken line 8, 8-of Fic'. 3; and

Fig. 9 is a perspective view of a detail of the same.

Referring to the drawings, throughout which like reference numerals indicate like parts, a frame is formed of two pieces of sheet metal, one of which pieces is cut and bent to form integral portions 10, 11, 12, 13,

14, 15, 16, 17 and 18, and the other of which pieces is cut and bent to form portions 19, 20, 2l, 22 and 23, said two pieces beingjoined and v riveted together to form a unitary frame, as indi-cated in Figs. 1, 2 and 3.

The portions 10 and 19 serve to form i spaced supports that are parallel with cach other, their lower edged portions being curved to form a smooth bottom bearing as indicated more clearly by dotted lines in Fig. 2, there being three slotted openings in each group 2l. r

Extending through each of the slotted openings of each group 24 is a wire 28 bent in the form of a staple, the ends of all of said wires being rigidly fixed in one key-bar 25, as more clearly shown in Figs. l and 3.

The key-bar 25 is disposed 1n a vertical plane and is provided `with an integral bracket arm 26, of angular form, which is pivotally attached to the underside of the portion 16 by a pivot bolt 27.

Each group24 comprising three wires 28, of the form of staples, serve as a 'key which may be depressed by ones finger until the movement of the linger is interce ted by the surface of thekey board formed the portions 21, 22 and 23, and since all t ree wires 28 ofeaeh group 24 that constitute a key, are of equal length, but are different in length from the wires of any other group 2l, it is manifest that a depression of any one key will swing the key-bar 25 on its pivot through an angular distance that is different from the distance that it would be caused to swing by a depression of any other one of the keys.

Extending in a horizontalplane from' the bracket arm 26, and rigidly attached thereto, is a rack bar 29 which is curved in the form of a semi-circle that is concentric with the pivot bolt 27, as shown more clearly in Figs. 1 and 3, said rack bar 29 being provided with a series of teeth'3'0, as indicated in Fig. 5."

t Rigidly attached to the frame of the struc turc is a semi-circular bracket 31 whose radius is larger than the radius of the circle of the rack bar 29 and whose axis is in the same vertical line with the axis of the circle of said rack bar 29, as indicated in Fig. 1.

Integral with the upper edge of the les ibracket 31 are spaced lugs 32, which project upwardly and converge inwardly, as indicated in Figs. 1 and 2.

Each of the lugs 32 serves as a support for a bearing bracket 33, but, for convenience vin drawin l.' have Ashown onl tvv'o ad'acent 7 ones of said lugs 32 as being supplied each with a bearing bracket 33.

rihe bearln brackets 33 are of thin sheet L l g n n metal ano. are formed to extend trono the 1nner side ot' the lugs 32 in a circle around the rack bar 29, thence to theouter side ot said lugs 32 and in engagement therewith to terminate against the outer side ot the bracket 3L As :indicated in Figs. 5 and 6, each of the bearirncf,l brackets 33 is provided with integral Wing springs 3e that project from its upper side edges at opposite points'thereof, aiitl is further provided with integral pivots 35 that project from its side edges at opposite sides thereof between the Wing springs 34; and the circular racir bar 29.

Pivotally mounted on the adjacent pivots between adjacent. ones of the. brackets 38, is a guiding holder 86, formed of sheet metal, in the shape indicated in Figs7 3., 5 and 6, and extending through both the upper Wali and the lower Wall of said guiding holder Bti adjacent to the circular rack 'bar 29 is a circular hole, which serves as a bean ing for apinion rod 37, which is rotatably and slidably disposed to Aentend there- .through to adapt theteeth oi? said pinion roei 3? operatively to engage with the teeth of the circular rack har 29, as more clearly in S'litabiy disposed in a guiding recess formed in the outer edge portions of the guiding hoider 36 is a siide har. 38, of coru rugated cross-section. whose lower end portion is turned inwardly'to a right angle, to forno a lug 39, to which is connected a helical tension spring:x1 4G that extends through the guiding boitier 36 to connect its upper enti to the underside off-a lug 4i that is integral with the upper wail ci said guidingholder 36, said spring tending to maintain the slide bar 38 in its uppermost positionav integral with the upper end ot the slide bar 38 is a cfnicayo-cfmver."v iup; 42, that extends inwardly therefrom substantially at right angles thereto and on its innermost enti portion is articulated a cap 43 that is/ adapted tesi/ving to cover and uncover the concave side of said concave-convex lug 42. Attached to the underside of the lug 42 and to the adjacent portion of the slide bar 38 is a bearing bracket Li-Li which serves as a hearing forthe upper end portion of the pinion rod 37g as shown in Fig. 3. VThe pinion rod 37' is hollow throughout its length and extending through the bearing bracket te and through the lug 42 is a passageway i5 through which ink may nass from the concave side ot the lug 42 into the interior ot the hollow pinion rofl 3?, The holiow pinion roti terminates its tower end in an il 'iarin heit like portion @to are t f indicated tion is formed an external screwthread on to which is screwed. a cup-like stencil member 4c? which is formed to have a plurality ot' facets, like the facets 48 and 49, Athrough each of which facets 48 and 49 is formed a stencile'tl letter or other character as indicated in Fig. 7, and Within thespace inclosed by the iareclportion't] and the cupiilre stencil :member i? 'is disposed a padding 50 ot' absorbent material.

The hollow pinion 37 and the space Within the flaring' hell-like portion e6 and the cuplilre'stencil member li'is illed with a suitahie ink which may percoiate through the *ia 3er the character re resented in such. l

facet will be stencileol on said surface in an obvious manner.

The:guiding'` holder 36, on its oppositeA sides is corrugated to form two notches Within either'one of which may projectthe end of the Wing springs 34 to maintain said guiding' holder 36 in the respective one ot two diierent angular positions as may be required to cause one of the facets 48 or one oi' the facets 499 as may be desired', to engage with the surface of t e paper when the pinu ion rod 3? is depressed by a finger of ones lett hand applied to the cap 43 to move said inion rod to one oifthe different' positions indicated hy broken lines 52 in Fig. 3; either of which positions may he attained bv swinging the slide bar 38 and guiding holder 36 to cause the Wing spring 3st to project into the proper on'es ot the notches formed in the corrugated sides of the guiding hoider 86.

While l have shown only one pinion rod lines 51 and by dotted' 37 and its associated parts as beingdisposed y between adjacent ones of the lugs 32., it is to be understood that there are three other pinn ion rods, each like the disposed in a similar manner between adjacent ones of the other lugs 32. Y i

By depressing any particular one of the difiei-ent keys 28 the keyboard 25 will be actuated rotatively to move the circular rack-bar 29 in its circle concentric With the pivot 27 with the result that the pinion rod 37 will be rotated to dispose a corresponding particular one ot the facets o1" thecup-like member 4'? so that when the cap 43 is depressed such particular facet will engage with the surface .ot the paper upon which the structure' is disposed, and thereupon ans other particular hey may be depressed to rotate another particular one or the same one of the pinion rods 3'? to dispose another corresponding"particular facet. in a position' to engage with the surface` et the paper upon the depression oi? its pinion structure nlr moved to a nv positionim acdiately one et pinioa 3? pinion rod 37, each hasvbeen depressed in order that each successive character stenciled on the paper may be on a proper line or in a proper column.

In order to prevent the structure from tipping from its horizontal position on. the paper, if it he so required, I have provided a U shaped support 53, made of wire, whose opposite ends are articulated to the bracket 3 1, as indicated in Figs. 1 and 2, which support 53 may be swung downwardly to a ve r tical position to engage with the paper in the manner shown.

There are eleven facets in each of the two circles of the cup-like member 47, but only ten keys 28 for moving a desired one of ten of said facets to a required position and in order to move the eleventh one of said facets to a required position and to provide means for making a straight dotted line on the paper, I have provided a lever 54, one end of which is articulated to a lug 55 on the inner side of the portion 10 of the frame, as shown in Fig. 3, the free end of which lever 54 normally engages with an arm 56 that is integral with the key-bar 25, and upon a depression of the lever 54 the key-bar 25 will be actuated by a spring 57 to dispose the eleventh facet of a desired one of the two circular rows of facets of the clip-like member 47 of the,

required one of the pinion rods 37 in its desired position, the free end of the lever 54 by its downward movement disengaging from the arm 56 to permit such movement of the 'key-bar 25.

- Attached to the lever 54 is a curved tube 58, one portion of which extends vertically through the horizontal portion 11, thence in a horizontal direction for a distance, thence in a curve and back again in a horizontal direction, thence vertical for a slight distance to terminate in an externally screwthreaded end portion, upon which is disposed a screw-threaded removable cap 59, the purpose of such irregular course being to provide sufficient interior space within the tube to serve as a reservoir of large capacity for containing ink.

The other lower portion extends downwardly in a curve toward the point on the paper toward which `all the pinion rods 37 converge and its lowermost end portion is tapered almost to a point and is provided with an aperture through which inkmay flow when the lever 54 is depressed by pressure of ones finger on the cap 59 to cause such tapered end of the tube 58vto engage with the surface of the paper, thus to deposit ink on said paper, and to cause the tapered end portion of the tube 58 intermittently to engage with the surface of the paper when the structure is moved to makeA a line, there is provided a notched roller 60 that is rotatably mounted in a bracket 61 that is fastenedto said lever 54 in a position -to engage with the surface of the paper when said lever is depressed to a point where the tapered end of the tube 58 engages with the paper so that when the structure is moved the notch roller 60 by its projection ridges will intermittently raise and lower the tube 58 from its contact with the paper to make a dotted line.'

In order to permit ones hand to be steadied in its position while manipulating the different keys 28, I have provided a circular hand-hold 62 with which the inner surface of the palm' of ones hand may enage.

contemplation of the accompanying drawings and a consideration ot' the description of the structure as herein given will make clear the operation of the structure to one skilled in the art.

Obviously, changes may be made in the forms, dimensions and arrangement of parts of my invention without departing from the spirit thereof.

What I claim is:

A stencil writing machine of the class described which embodies a frame having supporting members to adapt it to be slidably supported on a surface to be stenciled; a vertically disposed key-board rigidly associated with said frame and provided with key-holes extending therethrough; a lever pivotally mounted on said frame and provided at one end with an attached key-bar disposed adjacent to said bey-boa-rd and parallel therewith whereby said key-bar may be actuated to swing toward and away from said key-board; a lurality of keys of different lengths rigi'ly fixed in said key-bar and disposed freely to roject through said key-holes of said key oard; a toothed rack-bar attached to said lever and disposed in a horizontal plane to extend in a circle concentric with the pivot of said lever; a bracket attached to said frame and disposed to extend in a larger circle concentric with the circle of said rack-bar; a plurality of spaced lugs integral with said bracket and disposed to 'extend obliquely upward in converging lines therefrom; a plurality of guiding holders disposed each between adjacent ones of said spaced lugs and pivotally associated therewith; a slidebar mounted on each of said guiding holders and adapted to be slidablv movable thereon; a pinion-rod'rotatably mounted on each of said slide-ars and aoaored operatively to engage its teeth with the teeth of said rackbar whereby it may be rotatively moved in response lo movements of said key-bar, said pinion-rod being hollow throughout its length; a stencil member comprising a cup formed to have two circular rows of facets each of which facets is perforated to form a stencil, said stencil member hein attached to the lower end of said pinion members a, pil@ m? absmben: maexm if? sai slie-'aar at a, desir-m one of two c, posed within smid s'temei :member mijacnt entf, angular positions with respect t@ i ve ma said stenced facets 'whereby ink fu'om tical me. within said holow pnmn md may be caused ln witness whereof I hereuno Saksen-*iba Sowly in pen-solai@ neeatm'ough inw iba my name ibis (ith dy August, Aw D. perfoxatons of Sa acas, a mnel and 1917. @may provid@ m the uppmf and @E Suid 1 pnommd; and dem means im holding PAUL E. VSTAD 

